Measurement of beam-recoil observables Cx and Cz for K+Λ photoproduction

(CLAS Collaboration)

doi:10.1103/1q5m-x849

Measurement of beam-recoil observables C_x and C_z for K^+Λ photoproduction

(CLAS Collaboration)

Florida International University
Thomas Jefferson National Accelerator Facility
Université Paris-Saclay
Old Dominion University
Argonne National Laboratory
Temple University
King Saud University
National Institute for Nuclear Physics
University of York
Duquesne University
University of Brescia
Fairfield University
Rensselaer Polytechnic Institute
Justus Liebig University Giessen
George Washington University
Universidad Técnica Federico Santa Maria
University of Connecticut
Lomonosov Moscow State University
University of New Hampshire
University of Ferrara
Lamar University
Florida State University
University of Rome Tor Vergata
A. Alikhanian Yerevan Institute of Physics
Ohio University
University of South Carolina
Arizona State University
College of William and Mary
Mississippi State University

Research output: Contribution to journal › Article › peer-review

Abstract

Exclusive photoproduction of K^+Λ final states off a proton target has been an important component in the search for missing nucleon resonances and our understanding of the production of final states containing strange quarks. Polarization observables have been instrumental in this effort. The current work is an extension of previously published CLAS results on the beam-recoil transferred polarization observables C_x and C_z. We extend the kinematic range up to invariant mass W = 3.33 GeV from the previous limit of W = 2.5 GeV with significantly improved statistical precision in the region of overlap. These data will provide for tighter constraints on the reaction models used to unravel the spectrum of nucleon resonances and their properties by not only improving the statistical precision of the data within the resonance region, but also constraining t-channel processes that dominate at higher W but extend into the resonance region.

Original language	English
Article number	065211
Journal	Physical Review C
Volume	112
Issue number	6
DOIs	https://doi.org/10.1103/1q5m-x849
State	Published - 29 Dec 2025

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10.1103/1q5m-x849

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@article{8b6c582fadf441b4ac7430add7dd892b,

title = "Measurement of beam-recoil observables Cx and Cz for K+Λ photoproduction",

abstract = "Exclusive photoproduction of K+Λ final states off a proton target has been an important component in the search for missing nucleon resonances and our understanding of the production of final states containing strange quarks. Polarization observables have been instrumental in this effort. The current work is an extension of previously published CLAS results on the beam-recoil transferred polarization observables Cx and Cz. We extend the kinematic range up to invariant mass W = 3.33 GeV from the previous limit of W = 2.5 GeV with significantly improved statistical precision in the region of overlap. These data will provide for tighter constraints on the reaction models used to unravel the spectrum of nucleon resonances and their properties by not only improving the statistical precision of the data within the resonance region, but also constraining t-channel processes that dominate at higher W but extend into the resonance region.",

author = "\{(CLAS Collaboration)\} and S. Adhikari and Raue, \{B. A.\} and Carman, \{D. S.\} and L. Guo and T. Chetry and P. Achenbach and Alvarado, \{J. S.\} and Amaryan, \{M. J.\} and Armstrong, \{W. R.\} and H. Atac and H. Avakian and L. Baashen and Baltzell, \{N. A.\} and L. Barion and M. Bashkanov and M. Battaglieri and F. Benmokhtar and A. Bianconi and Biselli, \{A. S.\} and S. Boiarinov and M. Bondi and F. Boss{\`u} and Brinkmann, \{K. Th\} and Briscoe, \{W. J.\} and Brooks, \{W. K.\} and S. Bueltmann and Burkert, \{V. D.\} and T. Cao and R. Capobianco and Carvajal, \{J. C.\} and P. Chatagnon and V. Chesnokov and H. Chinchay and G. Ciullo and Cole, \{P. L.\} and M. Contalbrigo and V. Crede and A. D{\textquoteright}Angelo and N. Dashyan and \{De Vita\}, R. and M. Defurne and A. Deur and S. Diehl and C. Djalali and M. Dugger and R. Dupr{\'e} and H. Egiyan and \{El Alaoui\}, A. and \{El Fassi\}, L. and Jo, \{H. S.\}",

note = "Publisher Copyright: {\textcopyright} 2025 American Physical Society",

year = "2025",

month = dec,

day = "29",

doi = "10.1103/1q5m-x849",

language = "English",

volume = "112",

journal = "Physical Review C",

issn = "2469-9985",

publisher = "American Physical Society",

number = "6",

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TY - JOUR

T1 - Measurement of beam-recoil observables Cx and Cz for K+Λ photoproduction

AU - (CLAS Collaboration)

AU - Adhikari, S.

AU - Raue, B. A.

AU - Carman, D. S.

AU - Guo, L.

AU - Chetry, T.

AU - Achenbach, P.

AU - Alvarado, J. S.

AU - Amaryan, M. J.

AU - Armstrong, W. R.

AU - Atac, H.

AU - Avakian, H.

AU - Baashen, L.

AU - Baltzell, N. A.

AU - Barion, L.

AU - Bashkanov, M.

AU - Battaglieri, M.

AU - Benmokhtar, F.

AU - Bianconi, A.

AU - Biselli, A. S.

AU - Boiarinov, S.

AU - Bondi, M.

AU - Bossù, F.

AU - Brinkmann, K. Th

AU - Briscoe, W. J.

AU - Brooks, W. K.

AU - Bueltmann, S.

AU - Burkert, V. D.

AU - Cao, T.

AU - Capobianco, R.

AU - Carvajal, J. C.

AU - Chatagnon, P.

AU - Chesnokov, V.

AU - Chinchay, H.

AU - Ciullo, G.

AU - Cole, P. L.

AU - Contalbrigo, M.

AU - Crede, V.

AU - D’Angelo, A.

AU - Dashyan, N.

AU - De Vita, R.

AU - Defurne, M.

AU - Deur, A.

AU - Diehl, S.

AU - Djalali, C.

AU - Dugger, M.

AU - Dupré, R.

AU - Egiyan, H.

AU - El Alaoui, A.

AU - El Fassi, L.

AU - Jo, H. S.

PY - 2025/12/29

Y1 - 2025/12/29

N2 - Exclusive photoproduction of K+Λ final states off a proton target has been an important component in the search for missing nucleon resonances and our understanding of the production of final states containing strange quarks. Polarization observables have been instrumental in this effort. The current work is an extension of previously published CLAS results on the beam-recoil transferred polarization observables Cx and Cz. We extend the kinematic range up to invariant mass W = 3.33 GeV from the previous limit of W = 2.5 GeV with significantly improved statistical precision in the region of overlap. These data will provide for tighter constraints on the reaction models used to unravel the spectrum of nucleon resonances and their properties by not only improving the statistical precision of the data within the resonance region, but also constraining t-channel processes that dominate at higher W but extend into the resonance region.

AB - Exclusive photoproduction of K+Λ final states off a proton target has been an important component in the search for missing nucleon resonances and our understanding of the production of final states containing strange quarks. Polarization observables have been instrumental in this effort. The current work is an extension of previously published CLAS results on the beam-recoil transferred polarization observables Cx and Cz. We extend the kinematic range up to invariant mass W = 3.33 GeV from the previous limit of W = 2.5 GeV with significantly improved statistical precision in the region of overlap. These data will provide for tighter constraints on the reaction models used to unravel the spectrum of nucleon resonances and their properties by not only improving the statistical precision of the data within the resonance region, but also constraining t-channel processes that dominate at higher W but extend into the resonance region.

UR - https://www.scopus.com/pages/publications/105028527822

U2 - 10.1103/1q5m-x849

DO - 10.1103/1q5m-x849

M3 - Article

AN - SCOPUS:105028527822

SN - 2469-9985

VL - 112

JO - Physical Review C

JF - Physical Review C

IS - 6

M1 - 065211

ER -

Measurement of beam-recoil observables C_x and C_z for K^+Λ photoproduction

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